<template>
  <div class="home-icons">
      <swiper :options="swiperOption">
          <swiper-slide v-for="(page, index) of pages" :key="index">
            <div class="icon" v-for="item of page" :key="item.id">
                <div class="icon-img">
                    <img class="icon-img-content" :src="item.imgUrl" alt="">
                </div>
                <p class="icon-desc">{{item.desc}}</p>
            </div>
        </swiper-slide>
      </swiper>
  </div>
</template>
<script>
export default {
  name: "HomeIcons",
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      },
      iconList: [
        {id: '0001', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '景点门票'},
        {id: '0002', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '滑雪季'},
        {id: '0003', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '泡温泉'},
        {id: '0004', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '动植物园'},
        {id: '0005', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1804/ff/fdf170ee89594b02.png', desc: '景点门票'},
        {id: '0006', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '滑雪季'},
        {id: '0007', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '泡温泉'},
        {id: '0008', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/ab/6f7d6e44963c9302.png', desc: '动植物园'},
        {id: '0009', imgUrl: 'http://img1.qunarzz.com/piao/fusion/1803/95/f3dd6c383aeb3b02.png', desc: '动植物园'}
      ]
    }
  },
  computed: {
    pages () {
      const pages = []
      this.list.forEach((item, index) => { // 项，下标
        const page = Math.floor(index / 8)  // 0 1 2 3 4 5 6 7 8    9   向下取整数
        if (!pages[page]) {  // page = 0 page = 0
          pages[page] = []
        }  
        pages[page].push(item)   // pages[0] item1 pages[0] += item2 
      })
      return pages
    }
  }
}
</script>
<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  @import '~styles/mixins.styl'
  .home-icons >>> .swiper-container  // 最外层做宽高比例 2  
    width: 100%
    overflow: hidden
    height: 0
    padding-bottom: 50%
  .home-icons
    margin-top: .1rem
    .icon  
      position: relative
      overflow hidden
      float: left 
      width: 25%
      height: 0
      padding-bottom: 25%
      .icon-img
        position: absolute 
        top: 0
        left: 0
        right: 0
        bottom: .44rem
        box-sizing: border-box
        padding: .1rem
        .icon-img-content
          display: block
          margin: 0 auto
          height: 100%
      .icon-desc
        position: absolute 
        left: 0
        right: 0
        bottom: 0
        height: .44rem
        line-height: .44rem
        text-align: center
        color: $darkTextColor
        ellipsis()
</style>
